Vacuum feed apparatus.



F. WEINBERG.

VACUUM FEED APPARATUS.

APPLICATION FILED JUNE 14. |911.

LSQQ 0., Patented wMz'ly 6, 1919.

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Be it known that l, FREDERICK 1WRINBERG, a citizen of the United States, residing at Detroit, county of Wayne, State -ot Michigan, have invented a certain new and useful improvement in Vacuum Feed Apparatus, and declare the following to be a full, clear, and exact description ofthe same, such as will enable others skilled in the art to which it'pertains to make and use the saine', reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to vacuum feed apparatusand consists inthe improvements hereinafter described and pointed out in the. claims.

in the accompanying drawing:

Figure 1 is a side elevation, diagrammatic in character, of an apparatus embodying mj invention. l l

Fig. 2 is a detail of the auxiliary tank Fig. 3 is a view similar to Fig. 2, the section being taken at right angles to that of Fig. 2, a special form of joining the constituent parts of the auxiliary tank being" shown.

a is the engine and b is the crank case i thereof. c is a centrifugal pump for circulating the cooling Water. d is a pump for circulating the oil.

The auxiliary tank is made up of two shells e and f, the walls of which are joined at the open ends of said parts.Y In the form l shown in Fig. 2, there are annular outwardly extending Hanges around the open ends of said parts which are joined in the usual way, as shown, In Fig. 3 screw threads are indented or spun in the thin metal of the parts which are then screwed together.

There is a partition o consisting of a circular plate convex downward and having its vedge held and bound between the constituent parts e f of the auxiliary tank'so as to -divide said tank into an upper chamber 7i,

O' l communicating with the outer air through a passage infwhich is an inwardly opening Specification o 'Letters atent.

Application filed l' une lll, ll?. Serial No. 174,680.

check valve n thus putting the compartment g into communication with the outer air so as to restore atmospheric pressure on said compartment.

lc is a float in the chamber p, having a central aperture through which passes the tube c2, which tube serves for a guide for the float if: in its motion.

There is a hook 762 extending from the upper surface of the ioat k. u2 is an aperture in a casting in the upper wall of the auxiliary reservoir, said aperture having a valve seat around its inner end and communicating with a passage u.

t2 'indicates a valve 'seat around the upper end ofthe passage t.

m is a U-shape wire having the valves m2 and m3 secured thereon. The hook 7a2 engages the loop of the wire mand the valve m2 is so located that when the float rises it shall raise the wire m so as to engage the valve m2 upon its seat al When the Hoat c falls the wire m is drawn downward by the iioat through the hook k2 seating the valve m3 on the seat t2.

r is a supply tank for liquid fuel located normally at a level below the auxiliary tank e. f. :r2 is a conduit leading from the tank .fr to the auxiliary reservoir c fat r3. y is a deflecting plate secured to thedelivery orifice for the liquid fuel and acting to carry such fuel beyond the float so that it shallY not fall upon said float.

z is a spring having its ends secured between the two parts e and of the auxiliary reservoir and normally bent at its center so that it shall spring by an intermediate position because of its resilience. The center of the spring a engages the float 71: so that said spring acts in the usual way to positively force the ioat -to one or the other extremes of its travel.

z. is a pipe communicating with the passage u and with the intake to a pump c or (Z. The pipe 7i is shown in full lines as communicating with the intake of the pump c and it is indicated in dotted lines, as an alternative construction, at Z4 communicating with the intake to the oil pump (Z.

i 2 is a pin or projection extending horizontally from the casting r. 3, 4 is a wire engaging the outer end of the projection 2 extending downward in the vertical part 3 then horizontally in the horizontal part 4E to engage the casting r. r2 is a valve suspended upon the projection 2 and guarded by the wire 4.

The operation of the above described device is as follows:

When the engine is ruiming the suction of the pump c or Z closes the valve r2, draws a Vacuum in the chamber p and causes the liquid fuel to rise from the tanlt a: into the chamber y) until the liquid in said chamber has acted upon the rloat /c to cause it to draw the spring e beyond itsv central position whereupon the iioat /t' rises suddenly and closes the valve m2 upon its seat u2 thus sluitting oil' the communication with the vacuum producing means. Flap valve r2 then opens and lets theliquid iiow by gravity into the chamber Q. Uien the level of the liquid in the compartment p has fallen suiliciently the float 7c is carried to its lower position, as shown in Fig. 2, drawing the valve m2 from its seat and the valve m upon its scat thus opening the vacuum producing passage, and closing the vcommunication with the outer air.

In internal combustion engines used with air planes or upon boats a high speed of rotation is maintained constant and the pumps c and d will be driven at a high rate of speed and therefore their suction will be suiiicient at all times to work the vacuum feed apparatus.

What I claim is:

1. In combination with a vacuum'feed apparatus having a vacuum chamber, an internal combustion engine having a liquid circulating pump adapted to be actuated by the same, and a vacuum producing passage communicating with said vacuum chamber and with the intake of said pump.

2. In a vacuum feed apparatus, an auxiliary reservoir consisting of two shells fastened together attheir open ends, operating 'apparatus in said auxiliary reservoir, and a spring secured at its ends between said parts so that the spring shall be bowed between its ends and adapted Ato actuate said operating apparatus in both directions.

3. In a vacuum feed apparatus, an auxil- ,iary reservoir having a vacuum chamber, a

vacuum producing passage communicating with said chamber, a passage communicating with said chamber and with the outer air, a

U-Shape wire having two valves secured;

thereon, one of said valves being adapted to close the communica-tion with the vacuum producing passage and the other of said valves being adapted to close the passage to the outer air, said valvesv being so located on said wire that one shall be off its seat when the other is engaged upon its seat, and a float adapted to move said wire for the purpose described.

4. In a Vacuum feed apparatus, an auxiliary reservoir having a vacuum chamber, a

vacuum producing chamber,

passage communicating with said chamber, a pass communicating with said chamber-and with the outer air.v a tieshape wire having' two valves secured thereon, one of said valves being adapted 'to close the communication with the vacuum producing passage and the other ot' saidV valves being adapted to close the iassage to the outei air7 said valves being so located on said wire that one shall be oli" its seat when the other is engaged yupon its seat, and a iioat having a hook engaging the loop or' said wire and adapted to actuate the wire for the purpose described.

5. In a vacuum feed apparatus, an auxiliary r'esciw'oirhaving an upper and a lower chamber, a vent tube extending through said upper chamber and continuously communieating at its lower end with the lower chamber and at its upper end with the outer air, and a iioat in said upper chamber, said tube acting as a guide for said float.

G. In a vacuum `feed apparatus, an auxiliary reservoir consisting of two shells, the adjacent ends of said sheils being provided respectively with complementary screw threads indented in the thin metal thereof, said shells being secured together by screwing the ends together.

7. In an apparatus of the kind described,

a part 7 having a projection 2 extending laterally therefrom, a. valve suspended on said projection, and a wire engaging the outer end of said projection extending downward outside of said valve'then turning inward and engaging the part fr below the valve r2.

8. The combination with a vacuum actuated apparatus of an internal combustion engine having a water circulating system, a passage communicating' with said water circulating system at; a point where the pressure in said system is less than atmospheric pressure, said passage communicating with said vacuum actuated apparatus for the purpose dcscribed. l

9. In a vacuum feed apparatus, an auxiliary reservoir having an upper and a lower an intake passage for air to the upper chamber` and a tube extending through said upper chamber and communicating at its lower end with the lower chamber and at its upper en d with the intake passage for air to the upper chamber.

10. In a vacuum feed apparatus, an auxiliary reservoir having an upper and a lower chamber, and a tube extending through said upper chamber and communicating at its lower end with the lower chamber and at its upper end with the outer air. f

In testimony whereof I sign this specification.

FREDERICK WEINBERG. 

